Very soon after the problems I removed the new version and restored the previous one from my Time Machine backups. That is working normally, so I'm not getting error messages now. When I was getting them (every time I tried to open my AIFF or Amadeus file), they were in the form of a notice that the Application had crashed and asking if I wanted to submit a report to Apple.
I was hesitant to re-download the new one in case it was a general problem, but if no-one else is reporting it here, I'll try again.

Do you think you could send me a compressed version of the folder “com.HairerSoft.AmadeusPro” located in Library/Components as well as a sample file that crashes the program? To open the “Library” folder, which is hidden, hit the “option” key, click on the “Go” menu in the Finder, and select “Library” there. Thanks a lot,

I could only find what you requested in Library/Containers, not Library/Components.
I've sent a zip of that, and a music file, to your e-mail.
In the meantime I've deleted the new version again (fifth time) and re-installed the previous version via Time Machine backup and that works fine.

and reproduce the problem with it? This should output some diagnostic messages to the console (Applications/Utilities/Console.app) before crashing. Could you please send these messages back to me? (Use the File -> Save a Copy As… function of the console to create a text file containing the whole log.) Thanks a lot,

I sent the log via PM, let me know if you didn't get it, my computer hung after hitting 'send'. The downloaded version seems to open files ok now--do I keep using that one? Do I have to delete/uninstall the crashed version? I see there is only one icon for AP anyway in my applications folder...

Ok disregard my last post, I spoke too soon; after the file was open for 10 minutes the program quit unexpectedly. Upon re-opening the app and trying to open a sound file again, it quit on the spot. I sent the crash report via the pop-up message...HELP!

Hi,
I was editing some stuff, on 2.1.2.
A prompt for new version shows up and I click to install... Nothing happened. Second attempt, the same way, I go to download page an pick up 2.1.4, install and start to have crashes everytime I want to open de project I was editing before.

Recover old 2.1.2 from a backup and continue to work without problems.
I think I send you at least a couple of crash reports.
Any clues about it?
Thanks.